Abstract for MVS System Messages, Vol 9 (IGF-IWM)

Purpose of this information

This information primarily describe messages that are issued to the system operator at the system console and system messages that are logged. These include:

Operator messages issued by the BCP and DFSMS/MVS.
Log messages issued by the BCP and DFSMS/MVS.
Some SYSOUT messages issued by the BCP and DFSMS/MVS. SYSOUT messages are issued by utilities that normally run in batch, such as SPZAP.
Batch job messages issued by the BCP. Messages issued by JES2 or JES3 for batch jobs are in the JES messages documents.

For the most part, messages issued at interactive terminals (like TSO/E and CICS® terminals) are documented by the specific elements and products that support those terminals.

This information also contains the routing and descriptor codes that IBM® assigns to the messages that z/OS® components, subsystems, and products issue. Routing and descriptor codes are specified by the ROUTCDE and DESC keyword parameters on WTO and WTOR macros, which are the primary methods that programs use to issue messages. The routing code identifies where a message will be displayed. The descriptor code identifies the significance of the message and the color of the message on operator consoles with color.

Who should read this information

The system messages documents are for all people who receive messages from the system. Usually, these people are system operators, system programmers, and application programmers who do any of the following tasks:

Initialize the operating system and its subsystems
Monitor system activity
Keep the system running correctly
Diagnose and correct system problems
Diagnose and correct errors in problem programs

Where to find the most current message information

The MVS™ System Messages documents are cumulative. As messages are added to the system they are added to the documents. Similarly, when messages are changed on the system, they are changed in the documents. However, when a message is deleted from the system (no longer issued), the message is not deleted from the document. This means that users can look in the most recent message documents for the most current descriptions of system messages.